Oil Recovery Enhancement from Low-Permeable Reservoirs on Base of Reservoir Simulation with Well-Testing and Production Logging

Abstract

Tight reservoirs start to play increasingly more important role in petroleum industry. However, quality of the most part of the 3D reservoir models created in Russia does not allow a trustworthy reservoir characterization and their development optimization. This circumstance is one of the causes for rather low recovery factors in the territory of the RF. To significantly improve the quality of those models production logging data is to be more widely used in reservoir simulation. Recovery enhancement activities become much more efficient when based on reliable reservoir development models. With specific reference to simulation of one of the “Gazprom neft” tight fields, the paper shows how the integration of welltest data in 3D simulation results in more confident modeling and improves the current oil production and ultimate oil recovery. In addition, some particular features were identified in the course of the work and new approaches were developed to solve tight reservoir simulation issues.

Recovery Increase by Permanent Downhole Gages Data. Western Siberia Field Case Study

“…Interpretation of the PDMG results when wells start production like a well-tests in each well gives phase permeability and fracture parameters (half-length, conductivity, fracture damage skin factor (if any)) without shutting the well and production lossless [3][4][5][6][7][8].…”

«Smart Wells» is a Key to Production Enhancement from Low Permeable Reservoirs

“…It allows to increase the productivity of horizontal and slanted wells, supplying uniform profiles of influx/ injectability, timely to identify the intervals of water-and gas-breakthrough, blocking them up by remote directions with the use of simultaneouslyseparated exploitation (SSE) equipment or internal control devices (ICD) [2]. The framework of the development controlling and measuring system in "smart wells" helps to improve low permeable reservoir flow models [4] and thereby implement the capabilities of well interference analysis and avoid water-and gasbreakthrough, including ones from injection wells. Fig.…”

"Smart wells" is a key to production enhancement from low permeable reservoirs (Russian)

“…Экспертиза содержания доклада Обществом инженеров нефтегазовой промышленности не выполнялась, и внесение исправлений и изменений является обязанностью авторов. Система контроля разработки на основе оборудования и средств измерения «smart wells» позволяет существенно усовершенствовать гидродинамические модели низкопроницаемых пластов [4] и тем самым -реализовать анализ межскважинного взаимодействия эксплуатационных скважин с упреждением прорывов воды или газа, включая упреждение опережающих прорывов вод от нагнетательных скважин. Электронное копирование, распространение или хранение любой части данного доклада без предварительного письменного согласия SPE запрещается.…”